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Welcome to the pages of

Frag´ Jan Zuerst - Ask Jan First GmbH & Co. KG

Dipl.-Ing. Jan Philipp Wüsten

Serving the world with tube technology from Germany since 1993.
Visa / Mastercard willkommen
Black Board

All prices in this catalogue are in EUROS per piece (or per meter if wire etc.)
if not indicated otherwise and plus shipping.

Produktbild Newly listed old radio sets. One each only, first come - first serve :-)
High power Doorknobs rated 1,7nF to 3nF (1700pF to 3000pF) at 40kV and 50kV (!!)
Those are excellent caps for Teslacoils, marxgenerators, high current applications etc.
One customer built a teslacoil and allowed us to publish a video of his tesla coil operating. Here it is !
Those are used, tested caps from disassembled industrial applications. They are oil-resistant so no problem to use them immersed in oil.

Detaileds datasheet: If you want one, mail us and we will gladly send you one.
Special sale: Electrolytics
We have on sale some really nice electrolytics:
100uF 400V radial snap in 105°C LCC at really low prices: regular 1,20 EUR / 1,39 EUR (net/ VAT included)
SPECIAL OFFER:
20 pcs EUR 14,- / EUR 16,66 (net/VAT included)
100 pcs EUR 50,00 / EUR 59,50 (net/VAT included)
box of 200 pcs EUR 89,00 / EUR 105,91 ( net / VAT included)
Special offer: Tube boxes
We all know it: some really nice tubes are rolling around in the shack without proper packaging.
We lowered the prices for plain white tube boxes in six original sizes with inner flap to hold the tube in place.
Those are German made quality boxes.
On our already lowered prices we offer up to 35% additional discount if you buy quantities.
DO NOT MISS THIS OFFER !!

Geigercountertubes for radiation measurement
Due to the catastrophy in Japan demand for geigertubes has risen.
Here you find newly listed tubes, made in Germany. Those are professional tubes in various designs, very hard to find.
They offer far extended possibilities than the typical geigercounter tube. Sale as stock lasts.
We wish the Japanese people all the best and all force they need to overcome these difficult times.
Rod Burman from Valve and Tube Supply in the UK has retired in January and sold his entire inventory to us.
As re-listing takes, well, quite some time please enquire via email if you need UK valves which are not yet listed in our catalogue.
New arrival: 6B4G Sylvania Power triode, NOS, former mil. stock.
Now you can build real triode amps with real western NOS tubes at a very attractive price.
Ex mil stock, individually boxed, early 1950s production
We supply the twin plate version with two internally paralleled systems having low distortion and high linearity due to.
completely parallel plates.
Tubes are being supplied with curvetraces and detailed testsheet, also paired and as quads if wanted.
ECC802s New arrival: Real Telefunken <>-Diamond-Bottom ECC802S, NOS,
individually boxed and measured.

Tubes are being supplied with curvetraces and detailed testsheet, also paired and as quads if wanted.
New horse in the stable: The "Roetest" from Mr.Weigl.
This is a computerised precision tube analyser and measuring system allowing many different tests, curve tracing and much more.
even THD can be calculated.
We offer this as additional service at a fixed price per tube.
New High Grade film caps in the range between 1 and 10 uF. Fine selection of ratings to cover this range.
Now all ratings between 0.001 and 100uF are being covered. Those are excellent caps for crossovers, PSU, bypassing, coupling etc.
Multi-purpose toroid trannies for tube circuits, primary 115 and 230 V, so usable worldwide.
Why wait for a custom made design if our trannies fit directly from the shelf.
Hartpapier Often sought-after: sheet-material bakelite ("Paxolin"), 3-10mm thickness. Standard and custom made cuts available.
Also in black lamination as ebonite-replacement.
The famous TFK YL1350 powerhorse. NOS, fresh in their boxes, like directly from the factory.
This is an 80W power tube with a transconductance of 22.0000 umhos... Octal base so no problem to use it.

Datasheet
6336 B Cetron high power triode, NOS, former mil-stock.
Real good PSU-tube, headphone, OTL or whereever you need more than a bit of current.
Datasheet
The Varisymbol: The Telefunken-ZM1350 planar alphanumeric Nixie, plus Smartsocket-PCB and PIC-uC
available from stock.
The ZM1350 is suitable for true-nixie alphanumeric displays, the smartsockets make life easy.
Storagetube LN5: wonderful display object. This is a former radar picture storage tube, NOS, high tech of itīs time.
Almost useless, NOS, NIB, for display or possible educational use. Datasheet
The Scopeclock-Projekt of Thiemwork:
All parts you need for your scopeclock from one supply.
RF-variable caps from 12 to 240pF at max. 1-3 kV.
The caps can be disassembled and modified pretty easily.
Here you see a PDF about cap-modding from 240pF 1kV to 50pF 4kV
boards and parts for the easy DIY tube projects of www.loetstelle.net are available from stock.


We kept our pages free from programming gimmicks as long as anyhow possible but now we had to include a little Javascript to ensure the display
of the upper navigation frame.
If you don´t see the navigation bar with it´s buttons on top of the page, please activate Javascript in your browser. If you can´t
 do that or if you don´t want to do that click here for the sitemap

  Content of this site is revised and updated continually. Have fun browsing and please report bugs.

External link: A MUST to visit if you love old radios:
Radio catalogue: more than 74.500 radios with   39.000 pictures and 38.000 schematics plus radio   forum.
www.Radiomuseum.org

A short FAQ about our pages and a little history


Wo ist die Deutsche Version ? Hier.
Ou sont les pages Françaises ? Ici.


How can I find out about updates of this pages ?
Simply subscribe to our newsletter. We will then email you when we have new offers for you.


Is it possible to visit you ?
No, we do not have a public store.

Where is What ?
The index framebar on the top of the screen guides you to all pages of our site.
If there is no index framebar on the top, please click here.
For pictures, datasheets and additional info click the "picture" icons or the thumbnails in the catalog lists.

Information about order procedures and contacting us can be found here.
Can I download this pages for offlinebrowsing?
Currently we offer no lists for download.

By the way: Who or what is Ask Jan First ® ??

We are a tube and antique electronic supply part company, founded in 1993 and online since 1998.
In the last years, we have served many thousands of customers worldwide. (From New Zealand to Canada)
Please ask us if you are looking for a tube or parts not listed here, we might well be able to find it for you.


Does Ask Jan First buy tubes?
Yes, we do. But we are no price consultant if you want to sell stuff on auctions not knowing where to start ;-)

I am looking for your postal address.
Here it is.
Frag´Jan Zuerst - Ask Jan First GmbH & Co. KG
Jan Philipp Wüsten
Preiler Ring 10
D- 25774 Lehe
Germany
Telephone: +49-4882-6054551
Telefax: +49-4882-6054552
Mobile: +49-173-6690429 
fjz@die-wuestens.de
alternative email: fjz@gmx.de

Those pages can be accessed at
http://www.electron-tubes.info
http://www.die wuestens.de
http://www.fragjanzuerst.de
(and some more mirrors)

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